How do you write a Operating Costs Calculator?

Operating Costs Calculator Fixed Costs Price Qty Total Rent Electricity Cost Cost Cost Cost Cost Total Fixed Costs Variable Costs Price Qty Total Salaries Advertising Taxes Cost Cost Cost Cost Total Variable Costs Ongoing Yearly Costs Price Qty Total Other Service Fees Cost Cost Cost Cost Cost Cost Total Ongoing Yearly Costs Ongoing Monthly Costs Price Qty Total 3rd Party Services Cost Cost Cost Cost Cost Cost Total Ongoing Monthly Costs TOTAL AMOUNT TOTAL MONTHLY AMOUNT TOTAL YEARLY AMOUNT